diff options
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index 3ac740b36508..c58a5643da60 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -752,7 +752,7 @@ static void msm_gpio_irq_mask(struct irq_data *d) raw_spin_unlock_irqrestore(&pctrl->lock, flags); } -static void msm_gpio_irq_unmask(struct irq_data *d) +static void msm_gpio_irq_clear_unmask(struct irq_data *d, bool status_clear) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct msm_pinctrl *pctrl = gpiochip_get_data(gc); @@ -764,6 +764,17 @@ static void msm_gpio_irq_unmask(struct irq_data *d) raw_spin_lock_irqsave(&pctrl->lock, flags); + if (status_clear) { + /* + * clear the interrupt status bit before unmask to avoid + * any erroneous interrupts that would have got latched + * when the interrupt is not in use. + */ + val = msm_readl_intr_status(pctrl, g); + val &= ~BIT(g->intr_status_bit); + msm_writel_intr_status(val, pctrl, g); + } + val = msm_readl_intr_cfg(pctrl, g); val |= BIT(g->intr_raw_status_bit); val |= BIT(g->intr_enable_bit); @@ -774,6 +785,17 @@ static void msm_gpio_irq_unmask(struct irq_data *d) raw_spin_unlock_irqrestore(&pctrl->lock, flags); } +static void msm_gpio_irq_enable(struct irq_data *d) +{ + + msm_gpio_irq_clear_unmask(d, true); +} + +static void msm_gpio_irq_unmask(struct irq_data *d) +{ + msm_gpio_irq_clear_unmask(d, false); +} + static void msm_gpio_irq_ack(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); @@ -1004,6 +1026,7 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl) chip->need_valid_mask = msm_gpio_needs_valid_mask(pctrl); pctrl->irq_chip.name = "msmgpio"; + pctrl->irq_chip.irq_enable = msm_gpio_irq_enable; pctrl->irq_chip.irq_mask = msm_gpio_irq_mask; pctrl->irq_chip.irq_unmask = msm_gpio_irq_unmask; pctrl->irq_chip.irq_ack = msm_gpio_irq_ack; |